speed-up TVector3::Unit (see ROOT-5302)
Replace bad old malloc.
Remove CGImageRef manipulations to shut up the ARC.
Disable the stupid swipe gesture, which broke 3D rotation.
Hide outlets and actions into the implementation file, no need to expose them,

interface builder can work with outlets/actions hidden in an implementation file.
Get rid of deprecated API calls.
They say you drawInRect:withFont: is deprecated, use drawInRect:withAttributes:

instead. Nice, but these are different functions producing different results -
drawInRect:withAttributes: uses some arbitrary color - CGContextSetRGBFillColor sometimes works,
sometimes (WHYWHYWHYWHYWHYWHY????? FUUUUUUUUUUU!!!!) does not.
Cleanup - fix property attributes, etc. etc.
Even more cleanup.
new version , hopefully able to fix failure in test 19